2. Atoms & Elements

How many protons do all isotopes of copper (Cu) have?

Which of the following atoms has the same number of neutrons as 14C?

Fluorine has an atomic number of 9 and an atomic mass of 19. How many neutrons are present in a typical atom of fluorine?

An atom of the isotope ¹³C contains how many protons (p), neutrons (n), and electrons (e)?

Which of the following correctly describes how to calculate the number of neutrons in the nucleus of an atom?

Which of the following is the correct name for the silicon isotope with a mass number of 32?

How many neutrons are contained in the isotope molybdenum-96 (Mo-96)?

Which of the following is the correct nuclear symbol for the isotope of argon with mass number 38?

Which statement best describes the existence of nitrogen-14 and nitrogen-15 isotopes?

Which of the following is closest to the natural abundance of the isotope Br-79?

Which statement correctly describes the behavior of triply charged uranium-235 and uranium-238 ions in a mass spectrometer?

Which of the following are the stable isotopes of carbon?

Which element is commonly used in the radiometric dating of fossils?

Which of the following pairs represent isotopes?

How many neutrons are present in an atom of thorium-234?